一个jive论坛系统的问题?

dcq 05-07-21

彭晨阳老师:
最近在看你写的《Java实用系统开发指南》,在布置jive论坛系统时,登录管理页面时出现错误:登录失败: 请确认你的用户名和口令都正确

我查看了一下logs中的DefaultConnectionProvider日志,其中出现下面的日志记录:
Starting ConnectionPool:
dbDriver = com.microsoft.jdbc.sqlserver.SQLServerDriver
dbServer = jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=jive
dbLogin = sa
log file = D:/Tomcat 5.0/webapps/jive/WEB-INF/jiveHome\logs\DefaultConnectionProvider.log
minconnections = 3
maxconnections = 10
Total refresh interval = 0.5 days
-----------------------------------------
Thu Jul 21 14:36:01 CST 2005 Opening connection 0 com.microsoft.jdbc.sqlserver.SQLServerConnection@1071c84:
Thu Jul 21 14:36:01 CST 2005 Opening connection 1 com.microsoft.jdbc.sqlserver.SQLServerConnection@e265d0:
Thu Jul 21 14:36:01 CST 2005 Opening connection 2 com.microsoft.jdbc.sqlserver.SQLServerConnection@18a6e6e:
Warnings on connection 0 java.sql.SQLWarning: [Microsoft][SQLServer 2000 Driver for JDBC]Database changed to jive
Warnings on connection 1 java.sql.SQLWarning: [Microsoft][SQLServer 2000 Driver for JDBC]Database changed to jive
Warnings on connection 2 java.sql.SQLWarning: [Microsoft][SQLServer 2000 Driver for JDBC]Database changed to jive
请问这是什么原因?应该如何解决?